Brennan and Booth eventually identify the victim as a young woman from Asia. The investigation leads them into the world of "ghost brides"—an ancient custom where deceased single women are "married" to deceased single men to ensure they aren't lonely in the afterlife. The victim was killed so her body could be sold for this ritual.
This episode marks the end of the Brennan/Sully arc. Brennan’s decision to stay behind—realizing she cannot simply walk away from her identity as a scientist and her partnership with Booth—is a pivotal moment for her character. Production Context Director: Tony Wharmby Writer: Gary Glasberg "Bones" The Boneless Bride in the River(2007)
A recurring B-plot involves Brennan’s planned vacation. Sully (Eddie McClintock), Brennan's boyfriend at the time, asks her to sail away with him for a year. The tension lies in whether Brennan will choose a life of adventure and romance or her dedicated work with Booth. Brennan and Booth eventually identify the victim as